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Nubuck-leather-like sheet and manufacturing process therefor

a technology of leather-like sheets and nubuck leather, which is applied in the direction of ornamental textile articles, furniture parts, other domestic objects, etc., can solve the problem of difficulty in maintaining the slimy touch that is sensed on the natural nubuck-finished leather

Active Publication Date: 2016-09-01
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention allows for a highly slimy touch that is close to a natural nubuck-finished leather. A nubuck-finished leather-like sheet can be obtained that has a similar feel to a natural leather.

Problems solved by technology

In the conventional nubuck-finished leather-like sheet, it has been difficult to maintain a slimy touch that is sensed on the natural nubuck-finished leather.

Method used

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  • Nubuck-leather-like sheet and manufacturing process therefor
  • Nubuck-leather-like sheet and manufacturing process therefor
  • Nubuck-leather-like sheet and manufacturing process therefor

Examples

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Effect test

example 1

[0072]Ethylene-modified polyvinyl alcohol (ethylene unit content: 8.5 mol %, degree of polymerization: 380, saponification degree: 98.7 mol %) as a thermoplastic resin serving as a sea component, isophthalic acid-modified PET (isophthalic acid unit content: 6.0 mol %, melting point peak temperature: 242° C., endothermic sub-peak temperature: 110° C.) as a thermoplastic resin serving as an island component were molten separately. Then, each of the molten resins was supplied to a multicomponent fiber spinning spinneret having many nozzle holes disposed in parallel, such that a cross section on which 25 island component portions having uniform cross-sectional areas were distributed in the sea component can be formed. At this time, the molten resins were supplied while adjusting the pressure such that the mass ratio between the sea component and the island component satisfies Sea component / Island component=25 / 75. Then, the molten resins were discharged from the nozzle holes set at a spi...

examples 2 to 6

[0098]Nubuck-finished leather-like sheets were obtained in the same manner as in Example 1 except that the amount of the acrylic resin serving as the surface layer resin was changed to the amounts listed in Table 1 by adjusting the pick-up, instead of setting the amount to 5 parts by mass per 100 parts by mass of the non-woven fabric, and the obtained nubuck-finished leather-like sheets were evaluated. The results are shown in Table 1.

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Abstract

Disclosed is a nubuck-finished leather-like sheet including a non-woven fabric that is an entangled body of ultrafine filaments, wherein the non-woven fabric includes a napped surface having napped fibers formed thereon, and the napped fibers are fixed to an acrylic resin on the napped surface while being laid down. Preferably, the acrylic resin is present so as to retain voids in the napped surface, while being made malleable.

Description

TECHNICAL FIELD[0001]The present invention relates to a nubuck-finished leather-like sheet for use as a surface material for clothing, shoes, articles of furniture, general merchandise, and the like. More particularly, the invention relates to a nubuck-finished leather-like sheet having an excellent (natural leather-like) slimy touch, which is a moist touch.BACKGROUND ART[0002]Conventionally, as a leather-like sheet resembling natural leather, a full grain-finished leather-like sheet provided with a grain-finished skin layer on the surface, and a suede-finished leather-like sheet or nubuck-finished leather-like sheet having a napped surface are known. In general, the surface of the nubuck-finished leather-like sheet has shorter naps than those of the surface of the suede-finished leather-like sheet.[0003]The natural nubuck-finished leather is a leather product having a velvet-like surface that is produced by napping the grain layer of a leather by buffing. The natural nubuck-finishe...

Claims

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Application Information

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IPC IPC(8): D06N3/00
CPCD06N3/004D10B2403/0111D06N3/0011D06N3/0004D06N3/0077D06N3/042D06N3/08D06N2211/10D06N2211/106D06N2211/14D06N2211/28Y10S428/904Y10T428/2395Y10T428/23986
Inventor WAKIMOTO, YOSHIAKITANAKA, JIROWARITA, MASATONAGAYAMA, REI
Owner KURARAY CO LTD